Description of twelve new species of the genus Ripeacma Moriuti, Saito & Lewvanich (Lepidoptera: Autostichidae) from China Author Xu, Zhixin 0000-0001-6851-8234 College of Life Sciences, Nankai University, Tianjin 300071, China & xuzhixin 8848 @ 126. com; https: // orcid. org / 0000 - 0001 - 6851 - 8234 Author Wang, Shuxia 0000-0002-9316-6661 College of Life Sciences, Nankai University, Tianjin 300071, China & shxwang @ nankai. edu. cn; https: // orcid. org / 0000 - 0002 - 9316 - 6661 shxwang@nankai.edu.cn text Zootaxa 2022 2022-07-26 5168 5 521 540 journal article 107001 10.11646/zootaxa.5168.5.2 3a83fba1-20b2-42c1-b516-659ca5b64501 1175-5326 6911445 F0B8BD09-854A-4D53-BC9A-FE106F18D525 Ripeacma stigmosa Wang , sp. nov. ( Figs 9 , 21 ) Type material. CHINA , Hainan : Holotype ♂ , Tianchi ( 18.73°N , 108.87°E ), Jianfengling , 787 m , 10.III.2016 , leg. QY Wang et al. , slide No. LiSR16228. Paratype : Hainan : 1♂ , same data as holotype except dated 7.III.2016 , slide No. LiSR16279 ; Yunnan : 1♂ , Jingdong , 1140 m , 23.VI.2013 , leg. ZG Zhang , slide No. XZX20259 . Diagnosis. The new species can be distinguished by the forewing having two discocellular stigmata, the irregularly circled juxta arched outward lateromedially, and produced postero- and anteromedially, and the aedeagus with a large sub-triangular sclerite from about distal 1/4 reaching near apex. Description. Adult ( Fig. 9 ). Wingspan 13.5 mm . Head whitish yellow. Labial palpus yellow, with black scales on outer surface. Antenna yellow; scape with black scales and flagellum ringed with black on dorsal surface. Thorax and tegula black basally, yellow distally. Forewing yellow, with yellowish brown scales; costal margin with a wide black band along basal 1/3, with a large semicircular black spot at middle and two–three black dots in distal 1/3; discal, discocellular and plical stigmata black, discocellular stigmata doubled, placed one above the other; terminal dots black, evenly spaced along termen to tornus; fringe grey along termen and dorsum. Hindwing and fringe grey. Legs yellow; coxa of foreleg black on ventral surface; on dorsal surface, femur and tibia of foreleg black, tibia of midleg black, with yellow streak at basal 1/3, at middle and at apex, tarsi of fore- and midlegs black at middle of first tarsomere and at base of second tarsomere as well as on entire third and fourth tarsomeres, femur of hindleg with black scales; on outer surface, tibia of hindleg with black scales at base and on distal half, tarsus black at middle of first tarsomere and at base of second tarsomere. Male genitalia ( Fig. 21 ). Uncus elongate triangular, narrowed from wide base to pointed apex, with a seta at middle laterally. Gnathos membranous, ventral plate indistinct. Tegumen uniformly wide medially, with a large Vshaped anterior emargination; lateral arms slightly narrowed to apex, longer than median width. Valva with costal and ventral margins subparallel, apex obtusely rounded, with a tuft of stout long setae at basal 1/3 above ventral margin; costa uniformly banded, reaching tip of costal margin; transtilla lobes uniformly banded, joined mesially by membrane; sacculus triangular, more sclerotized apically. Saccus wide at base, narrowed to basal 1/3, distal 2/3 clubbed, with a small elliptical membranous lobe apically. Juxta a large irregular circle, arched outward laterally, produced postero- and anteromedially. Aedeagus about 3/4 length of valva, tapered to pointed apex; banded process extending from before laterobasal 1/3 to middle length of aedeagus, then fused and produced to a triangular process distally; large sub-triangular sclerite from about distal 1/4 reaching near apex, with a tooth at each angle. Female unknown. Distribution. China ( Hainan , Yunnan ). Etymology. The specific epithet is derived from the Latin stigmosus , referring to the black spots on the forewing.